Poinsettia plant named ‘Duepremimpol’

ABSTRACT

A new and distinct cultivar of Poinsettia plant named ‘Duepremimpol’, characterized by its compact, upright and outwardly spreading plant habit; freely branching habit; early flowering habit; inflorescences with pale yellow-colored flower bracts; and excellent post-production longevity.

Botanical designation: Euphorbia pulcherrima Willd.

Cultivar denomination: ‘Duepremimpol’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Poinsettia plant, botanically known as Euphorbia pulcherrima Willd., and hereinafter referred to by the name ‘Duepremimpol’.

The new Poinsettia plant is a naturally-occurring whole plant mutation of a proprietary selection of Euphorbia pulcherrima Willd. identified as code number E-16-18, not patented. The new Poinsettia was discovered and selected by the Inventor as a single flowering plant within a population of plants of the parent selection in a controlled greenhouse environment in Rheinberg, Germany on Nov. 1, 2008.

Asexual reproduction of the new Poinsettia plant by terminal vegetative cuttings in a controlled greenhouse environment in Rheinberg, Germany since June, 2009, has shown that the unique features of this new Poinsettia plant are stable and reproduced true to type in successive generations of asexual reproduction.

SUMMARY OF THE INVENTION

Plants of the new Poinsettia have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Duepremimpol’. These characteristics in combination distinguish ‘Duepremimpol’ as a new and distinct cultivar of Poinsettia:

-   -   1. Compact, upright and outwardly spreading plant habit.     -   2. Freely branching habit.     -   3. Early flowering habit.     -   4. Inflorescences with pale yellow-colored flower bracts.     -   5. Excellent post-production longevity.

Plants of the new Poinsettia differ primarily from plants of the parent selection in flower bract coloration as plants of the parent selection have red-colored flower bracts.

Plants of the new Poinsettia differ primarily from plants of ‘Duepremimice’, disclosed in a U.S. Plant patent application Ser. No. 12/568,293, in flower bract color as plants of ‘Duepremimice’ have pale yellow and red bi-colored flower bracts.

Plants of the new Poinsettia can also be compared to plants of Euphorbia pulcherrima Willd. ‘Duepre’, disclosed in U.S. Plant Pat. No. 13,644. In side-by-side comparisons conducted in Rheinberg, Germany, plants of the new Poinsettia differed from plants of ‘Duepre’ in the following characteristics:

-   -   1. Plants of the new Poinsettia have slightly larger leaves and         flower bracts than plants of ‘Duepre’.     -   2. Plants of the new Poinsettia and ‘Duepre’ differed in flower         bract color as plants of ‘Duepre’ had red-colored flower bracts.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates the overall appearance of the new Poinsettia plant. The photograph shows the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Poinsettia plant. The photograph comprises a side perspective view of a typical flowering plant of ‘Duepremimpol’ grown in a container.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photograph and following observations and measurements describe plants grown in Rheinberg, Germany during the winter in a glass-covered greenhouse and under conditions and practices which approximate those generally used in commercial Poinsettia production. During the production of the plants, day and night temperatures averaged 22° C. and light levels were about 4,500 lux. Measurements and numerical values represent averages for typical flowering plants. Single plants were grown in 13-cm containers and were pinched one time five weeks after planting the cuttings. Plants were 16 weeks from planting when the photograph and the detailed description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Euphorbia pulcherrima Willd.     ‘Duepremimpol’. -   Parentage: Naturally-occurring whole plant mutation of a proprietary     selection of Euphorbia pulcherrima Willd. identified as code number     E-16-18, not patented. -   Propagation:     -   -   Type.—Terminal vegetative cuttings.         -   Time to initiate roots, summer.—About nine days at 22° C.         -   Time to initiate roots, winter.—About 13 days at 22° C.         -   Time to produce a rooted young plant, summer.—About three             weeks at 22° C.         -   Time to produce a rooted young plant, winter.—About four             weeks at 22° C.         -   Root description.—Fibrous, fleshy, medium in thickness;             white in color.         -   Rooting habit.—Freely branching; dense. -   Plant description:     -   -   Plant habit and form—Compact, upright and outwardly             spreading plant habit; inverted triangle; inflorescences             positioned above the foliar plane; moderately vigorous             growth habit.         -   Plant height.—About 19 cm.         -   Plant diameter or spread.—About 35 cm.         -   Lateral branch description.—Quantity: Freely branching             habit, about six lateral branches develop after pinching.             Length: About 15 cm. Diameter: About 6 mm Internode length:             About 1.2 cm. Strength: Strong. Texture: Smooth, glabrous.             Color: Close to 137A.         -   Foliage description.—Arrangement: Alternate, simple. Length:             About 12.1 cm. Width: About 8.2 cm. Shape: Ovate. Apex:             Apiculate. Base: Obtuse. Margin: Entire with dentate lobing.             Venation pattern: Pinnate. Texture, upper and lower             surfaces: Smooth, glabrous. Color: Developing leaves, upper             surface: Close to 141B. Developing leaves, lower surface:             Close to 138A. Fully expanded leaves, upper surface: Close             to 139A; venation, close to 146C. Fully expanded leaves,             lower surface: Close to 138A; venation, close to 144B.             Petiole: Length: About 4.2 cm. Diameter: About 2.6 mm.             Texture, upper and lower surfaces: Smooth, glabrous. Color,             upper and lower surfaces: Close to 144B. -   Inflorescence description:     -   -   Inflorescence type and habit.—Inflorescences are compound             corymbs of cyathia with colored flower bracts subtending the             cyathia; one inflorescence per lateral branch;             inflorescences positioned above the foliar plane.         -   Fragrance.—None detected.         -   Natural flowering season.—Autumn/winter; inflorescence             initiation and development is induced under long nyctoperiod             conditions; early flowering, response time is about eight             weeks.         -   Post-production longevity.—Excellent post-production             longevity; plants of the new Poinsettia maintain good             substance and bract color for about eight weeks under             interior conditions and about twelve weeks under greenhouse             conditions; inflorescences persistent.         -   Inflorescence size.—Diameter: About 20 cm. Height (depth):             About 3 cm.         -   Flower bracts.—Quantity per inflorescence: About 15. Length:             About 9.4 cm. Width: About 6.3 cm. Shape: Ovate; slightly             lobed. Apex: Apiculate. Base: Obtuse. Margin: Entire with             dentate lobing. Texture, upper and lower surfaces: Glabrous;             rugose. Venation pattern: Pinnate. Color: Developing bracts,             upper surface: Close to 150D. Developing bracts, lower             surface: Close to 1D. Fully expanded bracts, upper and lower             surfaces: Close to 1D. Venation, upper and lower surfaces:             Similar to flower bract color. Bract petiole: Length: About             1.7 cm. Diameter: About 2 mm. Texture, upper and lower             surfaces: Smooth, glabrous. Color, upper and lower surfaces:             Close to 144B.         -   Cyathia.—Quantity per corymb: About ten. Diameter of cyathia             cluster: About 2.5 cm. Length: About 8 mm. Width: About             6 mm. Shape: Ovoid. Color, immature: Close to 144B. Color,             mature: Close to 144A. Nectaries: Quantity per cyathium: One             or two. Diameter: About 6 mm. Color: Close to 14B.         -   Peduncles.—Length: About 3 mm. Diameter: About 2 mm.             Strength: Strong. Texture: Smooth, glabrous. Color: Close to             144B.         -   Reproductive organs.—Stamens: Quantity per cyathium:             About 20. Anther shape: Oval. Anther length: About 0.5 mm.             Anther color: Close to 26B. Amount of pollen: Abundant.             Pollen color: Close to 14B. Pistils: Quantity per cyathium:             One. Pistil length: About 1 cm. Style length: About 2 mm.             Style color: Close to 144B. Stigma shape: Crested. Stigma             color: Close to 144B. Ovary color: Close to 144B.             Seed/fruit: Seed and fruit production has not been observed. -   Disease/pest resistance: Plants of the new Poinsettia have not been     shown to be resistant to pathogens and pests common to Poinsettias. -   Temperature tolerance: Plants of the new Poinsettia have been     observed to tolerate temperatures ranging from about 12° C. to about     40° C. 

1. A new and distinct Poinsettia plant named ‘Duepremimpol’ as illustrated and described. 